Metal structure for reinforcing concrete.



N o. 853,410; PATENTED JULY 2, 1907. o. N. MUELLER.

METAL STRUCTURE FOR REINPORCING CONCRETE. APPLICATION FILED JULY 10, 1906.

III:

OTTO NpMUEIlLER, or INDIANAPOLIS, INDIANA.

METAL STRUCTURE FOR REINFORCING CONCRETE.

To all whom it may concern: v

Be it lmown that I, O'r'ro' N. MUELLER, a citizen of the United States; residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and'useful Improvements in Metal Struc tures iofReiniorcing Concrete, of which the following is v a specification.

' My invention relates to that class oi metal devices which are used for the purposeof reinforcing concrete in structural work.

' It is especially designed for use in niaking concrete 3 floors carried by beams in buildings. r

It consists in a peculiartreatment and formation of that class of structural shapes in which one or more members extends at an angle (usually at a right angle) with one or more others-such as channels, I-beams, if-bars, angles, and the like, whereby such members are so distorted from their regular shape as to present'a wavy or crimped condition, and be-thereby better enabled to mechanically connect with the concrete, and

' present a large area of contactsurface'.

I have chosen to illustrateuny iuv'entioniin 'cunnection with, what are commonly known as channe1',bars,"- wherein the twoiedge members extend out'a t substantially right angles with the main or body member when the bar is in its ordinary'or normal condition Said invention is however equallyapplicable to many other structural shapes, and I desire to be understood as claiming said invention shapes. I

' Referring tothe accompanying drawings, which are when applied to any of such made a part hereofland on which similar reference characters indicate similar parts, Figure 1 is a perspective view illustrating the use of my said invention;

[Fig 2 a plan view of a fragment of a channel bar after liesbeen treated in accordance with my said inven-..

t'ion, Fig. 3 a side elevation thereof, and Figs. 4 and 5 transverse sectional. views of the same.

Specification of Lett ers' Patent.

Application filed July 10,1906. Serial No. 325,452.

Patented July 2, 1907.

As will be readily seen by an examination of these drawings the invention consists in distorting the members of such a barso that the edges will extend in various directions and present numerous irregularities. Thechannel bar shown consist-s, as is usual, of a main member or body 21 and two'side members or flanges 22 and 23. These side members or flanges are shown.

as bent outwardly at intervals, as at 24 and 25, and the main member or body' is also shown as pressed outwardly at intervals, as at 26. Aftersuch a bar has been produced it is bentginto the proper form to be carried by the I-beams 31 hi a building, as is shown in Fig. 1, and the concrete 32 is then applied thereto and supported thereby. This particular kind of shape I have found unites ,exceedinglywell with the concrete, so that the completed structure is unusually strongly united and bonded together.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent,

1. A concrete reinforcing member consisting of achannel bar comprising side flanges and-an intermediate connecting webfthe-side flangesbeing crimped laterally, and the intermediate web distorted outwardly at separated points. p

2. A concrete "reinforcing memberconsisting of a channel bar, comprisingside flanges and an intermediate connecting web, the outer-edges of the side 'flsnges being outwardly distorted at separated points, and the intermediate Web being outwardly distorted at separatedpoints.

3. A concrete reinforcing member consisting of a chain -n el bsr, comprising side flanges and an intermediate connecting web, the outer edges of the side flanges being distorted, outwardly only at separated points.

In witness whereof, I, have hereunto set my hand and seal at lndianapolis lndiana, this 6th day of July, A. D.

one thousand nine hundred and silk.

OTTO N. MUELLER. [L. S.] v

Witnesgc"; H Cnns'rn'n' Bimnronn, THOMAS W. MCMEANS. 

